KR970052354A - Contact hole formation method of semiconductor device - Google Patents
Contact hole formation method of semiconductor device Download PDFInfo
- Publication number
- KR970052354A KR970052354A KR1019950056956A KR19950056956A KR970052354A KR 970052354 A KR970052354 A KR 970052354A KR 1019950056956 A KR1019950056956 A KR 1019950056956A KR 19950056956 A KR19950056956 A KR 19950056956A KR 970052354 A KR970052354 A KR 970052354A
- Authority
- KR
- South Korea
- Prior art keywords
- photoresist film
- contact hole
- photoresist
- film
- forming
- Prior art date
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- Drying Of Semiconductors (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
본 발명은 반도체 소자의 콘택 홀 형성 방법에 관한 것으로, 특히 건식 식각에 의한 반도체 소자의 콘택홀 형성 방법에 관한 것이다. 이와 같은 본 발명의 콘택 홀 형성 방법은 실리콘 기판상에 실리콘 산화막을 형성하는 단계; 상기 실리콘 산화막 상에 콘택 홀을 형성할 영역에 제1감광막을 도포한 후 노광하는 단계; 제1감광막을 경화시키는 단계; 제1감광막 상에 제2감광막을 도포한 다음 노광하는 단계; 제1감광막과 제2감광막을 현상하여 제1감광막 패턴과 제2감광막 패턴을 형성하는 단계; 이방성 식각을 행하여 콘택 홀을 형성하는 단계를 포함하는 것을 특징으로 한다. 특히, 본 발명은, 2층의 크기가 다른 감광막 패턴을 형성하여 식각하므로써 스텝 커버리지를 향상시키는 깔데기 모양의 콘택 홀을 건식 식각만을 통해 형성할 수 있으므로 공정을 간소화시키는 효과를 제공한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a contact hole in a semiconductor device, and more particularly, to a method for forming a contact hole in a semiconductor device by dry etching. Such a contact hole forming method of the present invention comprises the steps of forming a silicon oxide film on a silicon substrate; Exposing a first photoresist film to a region where a contact hole is to be formed on the silicon oxide film and then exposing the first photoresist film; Curing the first photoresist film; Coating and then exposing the second photoresist film on the first photoresist film; Developing the first photoresist film and the second photoresist film to form a first photoresist film pattern and a second photoresist film pattern; And anisotropic etching to form contact holes. In particular, the present invention provides an effect of simplifying the process, since a funnel-shaped contact hole that improves step coverage by forming and etching photoresist patterns having different sizes of two layers can be formed only by dry etching.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도 (가) 내지 (마)는 본 발명의 일 실시예에 따른 콘택 홀 형성 공정 단계를 설명하기 위한 반도체 소자의 요부 단면도.2 (a) to (e) are cross-sectional views of principal parts of a semiconductor device for explaining a process of forming a contact hole according to an embodiment of the present invention.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950056956A KR970052354A (en) | 1995-12-26 | 1995-12-26 | Contact hole formation method of semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950056956A KR970052354A (en) | 1995-12-26 | 1995-12-26 | Contact hole formation method of semiconductor device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970052354A true KR970052354A (en) | 1997-07-29 |
Family
ID=66617183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950056956A KR970052354A (en) | 1995-12-26 | 1995-12-26 | Contact hole formation method of semiconductor device |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970052354A (en) |
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1995
- 1995-12-26 KR KR1019950056956A patent/KR970052354A/en not_active Application Discontinuation
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